Emissions minimization of chlorinated micropollutants in coal solid waste co-combustion by primary measures

This study addresses co-combustion of coal-solid waste mixtures in pilot and laboratory-scale combustors, with emphasis on monitoring of toxic chlorinated hydrocarbon emissions like: polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), polychlorinated biphenyls (PCB) and polychlorinated benzenes (PCBz). The objectives of the work are stress on the so-called primary measures technique which cause reduction of the toxic emission prior formation the chlorinated micropollutants. Thermally resistant inorganic compounds were added directly to the fuel. The fuel-types used in this study are lignite coal from Puertollano (CIEMAT, Spain), pre-treated municipal solid waste (Rethmann Plano GmbH) and PVC (waste from ground floor). Two low cost and non- toxic nitrogen- and sulfur-compounds were considered as the most effective inhibitors for PCDD/F formation. That makes them applicable for use in a full scale combustion unit.